Technical Drawing - 2D Drawing Representation - Discussion

Discussion :: 2D Drawing Representation - General Questions (Q.No.1)

1. 

This is a conical-shaped recess around a hole, often used to receive a tapered screw head:

[A]. Boss
[B]. Spotface
[C]. Counterbore
[D]. Countersink

Answer: Option D

Explanation:

No answer description available for this question.

Suprith H S said: (Nov 21, 2015)  
Enlarge and bevel the rim of (a drilled hole) so that a screw, nail, or bolt can be inserted flush with the surface.

Deepak Sharma said: (Oct 25, 2016)  
Please explain that question in a simple way.

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